| Guimaraes to Oberkirch | 935.38 mi (1,505.35 km) |
| Guimaraes to Obernburg am Main | 1,018.70 mi (1,639.44 km) |
| Guimaraes to Obernkirchen | 1,106.37 mi (1,780.53 km) |
| Guimaraes to Oberschleissheim | 1,076.39 mi (1,732.29 km) |
| Guimaraes to Oberstdorf | 1,001.67 mi (1,612.02 km) |
| Guimaraes to Obertraubling | 1,118.57 mi (1,800.16 km) |
| Guimaraes to Obertshausen | 1,014.21 mi (1,632.21 km) |
| Guimaraes to Oberursel | 1,009.06 mi (1,623.92 km) |
| Guimaraes to Ochsenfurt | 1,049.63 mi (1,689.22 km) |
| Guimaraes to Ochsenhausen | 1,001.96 mi (1,612.50 km) |
| Guimaraes to Ochtrup | 1,039.13 mi (1,672.32 km) |
| Guimaraes to Odenthal | 986.94 mi (1,588.32 km) |
| Guimaraes to Oelde | 1,055.51 mi (1,698.68 km) |
| Guimaraes to Oelsnitz | 1,156.50 mi (1,861.20 km) |
| Guimaraes to Oer-Erkenschwick | 1,016.85 mi (1,636.46 km) |
